Project Details:

Improving soybean profitability in Iowa by reducing the hidden effects of brown stem rot and its interaction with the soybean cyst nematode

Parent Project: This is the first year of this project.
Checkoff Organization:Iowa Soybean Association
Categories:Soybean diseases
Organization Project Code:
Project Year:2009
Lead Principal Investigator:Gregory Tylka (Iowa State University)
Co-Principal Investigators:

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Information and Results

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Project Summary

This project addresses the importance of the interaction between Phialophora gregata (pathogen causing brown stem rot) and soybean cyst nematode in reducing yield of soybeans in Iowa. Results from this project will provide information needed to make sound decisions for the management of BSR. Specifically, it provides information for the first time on the amount of yield loss that occurs in Iowa due to 'hidden' disease caused by genetic type or genotype B of the BSR fungus. This research also is determining if the most widely planted SCN- and BSR-resistant cultivars in Iowa are providing protection against genotype B of the BSR fungus. The results from the research also will indicate if a new source of SCN resistance that is being developed for soybean breeding programs provides resistance to Iowa populations of the BSR fungus. The results of the proposed research will benefit Iowa growers by providing university and private seed company soybean breeders with the information needed to possibly direct efforts toward breeding for resistance to genotype B of the BSR fungus. Use of soybean varieties with resistance to genotype B should result in an increase in soybean profitability through increased production.

Project Objectives

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Progress of Work

Final Project Results

Benefit to Soybean Farmers

Performance Metrics

Project Years